2 surge suppressor, 3 voice capable dataloggers, 1 mixed-array – Campbell Scientific COM310 Voice Communications Modem User Manual
Page 18: 2 table data, 3 pakbus, Com310/pakbus datalogger support, 4 telephone

COM310 Voice Communications Modem
4.2 Surge Suppressor
If the phone company does not provide surge protection at the datalogger site,
you will need to install some. CSI offers surge protectors in two forms. Item #
6362 is a surge protector with environmental enclosure mounting hardware.
Item # 4330 is the surge protector with no mounting hardware (see Section
6.6).
4.3 Voice Capable Dataloggers
There are several Campbell Scientific dataloggers that are capable of voice
communications. The following sections tell which mixed-array, PakBus, and
table-based dataloggers are capable of which functions.
4.3.1 Mixed-array
A CR10X, CR510, or CR23X with mixed-array OS is capable of COM310
voice communications.
4.3.2 Table Data
The TD OSs (OS10XTD, OS510TD, and OS23XTD) do not support any
COM310 communications. For data collection you can use a COM210
modem.
4.3.3 PakBus
With PakBus dataloggers the COM310 supports such functions as program
send, data collection, and clock check. The following voice/data functions are
supported as well.
COM310/PakBus Datalogger Support
DATALOGGER Voice Callback Voice Callin Data Callback
CR1000 yes yes yes
CR10XPB yes yes no
CR510PB yes yes no
CR23XPB yes yes no
The COM310 supports concurrent communications. PakBus dataloggers with
multiple peripherals (COM310, RF450, RF401, MD485, NL100, CR10KD,
CR1000KD, and SC32B) can communicate simultaneously via those
peripherals.
4.4 Telephone
A touch-tone phone is normally used to call the COM310 modem. A rotary
phone will work if the programmed voice announcements do not require you to
navigate through the COM310’s menu system.
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